eythaann/Seelen-UI ? reverse-engineered prompt

Build me a fully customizable desktop environment for Windows 10 and 11, like a complete replacement for the normal taskbar, start menu, window switching, and workspace experience.

I want it to let me theme the whole shell, add a dock, a custom toolbar, desktop widgets, and a launcher that can open apps, files, and commands quickly. It should also support tiling windows, per app rules, virtual desktops, and a better alt tab style switcher. Make the UI feel polished and modern, with live preview in settings, easy customization, and support for lots of languages.

Please keep it focused on Windows integration, wallpaper aware accent colors, and a clean settings screen where I can adjust layouts, widgets, keybinds, and behavior without digging through files too much. If you need to check current docs or APIs, look them up online first.